Die for shaping spinning-rings from sheet metal



(No Model.)

M. D. MAROY. I DIE FOR SHAPING SPINNING RINGS FROM SHEET METAL.

No. 515,403. Patented Feb. 27, 1894.

UNITED STATES PATENT @EETCE.

MERRIOK D. MARCY, OF WORCESTER, MASSACHUSETTS.

DIE FOR SHAPING SPINNING- RINGS FROM SHEET METAL.

SPECIFICATION forming part of Letters Patent No. 515,403, dated February27, 1894.

Application filed July '7 1893. Serial No. 479,796- (No model.) 7

To all whom it may concern:

Be it known that I, MERRIcK D. MARoY, a citizen of the United States,residing at Worcester, in the county of Worcester and State ofMassachusetts, have invented a new and useful Improvement in Dies forShaping Spinning-Rings from Sheet Metal, of which the following is aspecification, accompanied by drawings, representing a completedspinning-ring made by my improved method and also illustrating theseveral steps in the process, and in which Figure 1 represents acircular disk of sheet metal from which the ring is made. Fig. 2represents in central, sectional view the cupshaped form into which thedisk is drawn by the action of a die press with the sheet metal formingthe sides of the cup reduced in thickness and with a fillet in thecorner between the annular side and bottom of the cup. Fig. 2 representsthe ring formed by removing the bottom-of the cup. Fig. 3 represents incentral sectional view the punch and die with a sectional view of thering as shown in Fig. 2 held therein and showing the first operation ofupsetting the thick edge of the ring in forming the flanged track forthe traveler.

. Fig. 4 represents the die, shown in Fig. 3,

with the ring therein, both shown in central sectional view with thering represented in the form produced by the action of the punch asshown in Fig. 3. Fig. 5 represents a die and punch in central sectionalview, with a sectional view of the ring at the completion of theoperation of upsetting and having the thick edge of the ring asrepresented in Fig. 45, compressed to form the flanged track for thetraveler. Fig. 6 represents in central sectional view, the punch andsectional die, with the ring held therein by which the base of the ringis expanded and Fig. 7 is a view of the completed ring.

Similar letters refer to similar parts in the different figures.

My present invention relates to an mproved method of making a spinningring from sheet metal, having flanges forming the track for the ringtraveler, integral with the cylindrical body of the ring and composed ofa single thickness of metal corresponding n size and shape to thespinning rings now in general use and adapted to be used with theordinary ring traveler.

My invention relates to an improved method of shaping spinning ringsfrom sheet metal and consistsin providing means for holding the bodyofthe ring against bending,orspreading, while its edge is compressed, orupset, by the reciprocating action of a compressing die, acting againstan inclined surface in the ring holding die, whereby the edge of thering is crowded to one side, during the action of upsetting and also inproviding said ring holding die with a restraining wall, or surface,opposite said inclined surface, so as to make the edge of the ringsymmetrical with the body of the ring, and these results I secure bymeans of the dies hereinafter described.

The method of making a spinning ring from sheet metal by means of myimproved dies is as follows:

A circular blank A, Fig. 1 is cut from a sheet of sheet metal and drawninto the cupshaped form represented at B, Fig. 2, that port-ion of themetal forming the annular vertical side B, being reduced in thickness bythe drawing operation of the punch and die by which it is stamped intothe cup-shaped form. The plunger, or male die, by which the interior ofthe cup is formed, is chamfered at its end so as to leave a fillet Bbetween the annular side B and the bottom B of the cup. The bottom B isthen removed from the cup forming a ring consisting of the annular sideB of the cup, provided with a thick edge 0 as represented in centralsectional view in Fig. 2. The punch and die by which the next operationis performed is represented in central sectional view in Fig. 3; the dieD being provided with an annular channel, or groove D provided withtapering or inclined sides D D and terminating at the bottom in anannular channel D having vertical opposing walls and being of the propersize to receive and support the vertical sides B and B of the body B ofthe ring. The ring in the form represented in Fig. 2 is placed withinthe annular channel formed in the (lie D as represented in Fig. 3 withthe side B held in the channel D and with the thick edge of the ringinthe beveled channel D with the inclined side of the fillet B restingagainst the inclined side D of the channel D. An annular punch Eprovided with a beveled end E adapted to, enter the channel D, is thenbrought down upon the thick edge 0 of the ring, upsetting it between theinclined sides D D into the form shown in Fig. 4 with the thick edge ofthe ring pressed into awedge shape between the inclined sides D and DThe straight portion B of the ring is then placed in an annular channelF of a die plate F, with the wedge-shaped edge 0 projecting above theface ofthe die F. A plunger G is then brought down upon the edge 0compressing it into the form shown in Fig. 5 having an interior flange Hand an exterior flange I-I lying in the same plane and integral with thebody B of the ring; the flanges H and H forming the track for the ringtraveler. The ring is then placed upon the anvil block I and between thefixed jaw I and a movable jaw I having flaring faces 1 ,1 and the body Bof the ring is then expanded, forming a flaring base J, as shown in Fig.6 so that the outer edge J of the flared section is preferably of thesame diameter as the outer edge of the exterior flange H; this operationis accomplished by a suitably shaped plunger K.

The several operations I have described are performed in a die pressemployed in sheet metal work and as the operation of such a die press iswell understood, I have not shown or described the same. 1

I do not confine myself to the specific form of the dies as shown, norto the exact successive steps in the process as described, as

both can obviously be varied somewhat without departing from the scopeof my present invention. After the expansion of the base of the ring,the edge J and the edges of the external and internal flanges H and Hare trimmed, in order to form a track for the ring traveler of uniformwidth and having concen tric edges.

During the operation of stamping and upsetting it will be probably foundnecessary to anneal the rings and after the edges have been trimmed asabove mentioned, the completed ring is hardened by case hardening, orotherwise, and the surface of the flanged track thoroughly polished tofit it to receive the ring traveler.

I am aware that a method of forming a spinning ring from sheet metal wasshown and described in Letters Patent of the United States, No. 216,731,issued June 24:, 1879, by which the edge of an annular ring was bentover upon itself to form an outer and inner flange for aring traveler,one of said flanges being formed of two thicknesses of metal and I donot claim the method described in said patent, as the process hereindescribed is one of upsetting and not bending.

I am also aware that a method of upsetting a spinning ring from sheetmetal was described in Letters Patent No. 216,730, issued June 24, 1879,in which an annular ring having a thick edge was held in a die, which.restrained the body of the ring from. bending, while the thick edge ofthe ring was pressed into an outer and inner flange forming a track forthe ring traveler, and my present invention consists of an improvementin the process of upsetting the flanges described in said patent. Myprocess involves an intermediate step, not shown in said patent, wherebythe thick edge of the annular ring which overhangs upon the inside ofthe ring is upset, so as to form a V-shaped edge, by being compressedbetween the inclined walls D D of an annular channel D the inclinedwalls D pressing against the inclined side of the fillet B whilepressure is applied to the edge of the ring, which crowds the metalagainst the inclined side D causing it to flow outwardly, at the sametime restraining the outward flow of the metal, by means of the inclinedside D so as to form a V-shaped head symmetrical with the body 13' ofthe ring. The method described in Patent No. 216,730 upsets the thickedge of the ring overhanging upon the inside of the ring, into a flangedtrack extending equally and symmetrically upon both sides of the body ofthe ring, by a single operation while the method forming the subject ofmy present invention, first forms a symmetrical V-shaped edge, by meansof upsetting the inwardly overhanging edge between the inclinedrestraining walls D D and subsequently compressing said symmetricalV-shaped edge into a flanged track, as described.

What I claim as my invention, and desire to secure by Letters Patent,is-

1. The combination of a die for shaping a spinning ring from sheetmetal, provided with an annular channel having its lower sectionprovided with opposing walls adapted to bear against the opposite sidesof the ring, whereby said body of the ring is restrained from bending,or spreading, and having the upper section of said annular channelprovided with an inclined surface upon one of its sides, whereby theedge of the ring is crowded toward the opposite side of the channel bythe movement of the metal along said inclined TOC IIO

surface, by means of pressure applied to the edge of said ring, and in aline parallel with its axis, and a compressing die by which pressure isapplied to the edge of the ring in a line parallel with the axis of thering, sub stantially as described.

2. The combination of a die for shaping a spinning ring from sheetmetal, provided with an annular channel having its lower section adaptedto fit the body of the ring and having its upper section provided withan inclined surface on one side to crowd the edge of the ring toward theopposite side of the channel, and having the opposite side ofthe'channel correspondingly inclined, so that the edge of the ring whenupset betweensaid inclined sides, be symmetrical with the body of saidring as held in the lower section of said channel, and a compressing dieby which the edge of the ring is upset between said insides D and D andupset the edge of an anclined sides, substantially as described. v nularring into a V-shaped edge, symmetri- 3. The within described dies forforming a cal with the body of the ring, substantially spinning ringfrom sheet metal and consistas described. 5 ing of a ring helding die Dhaving an annu- Dated this 5th day of July, 1893.

lar channel D formed with inclined sides D and D said inclined sidesterminating in MERRICK MARCY' an annular channel D and an upsetting dieWitnesses: E, provided with an annular beveled edge RUFUS B. FOWLER, IOE, adapted to enter between the inclined EMMA KESTER.

